from what I remember, when I was heading up with boone we were near the NCR, and the one with the caravan was the square right next to Gunrunners
Party Type: with Boone, 3 including myself
Caravan: 3 gaurds, leader
Party list: I believe I actually was the last one on the party list
Leader info: No clue, think boone may be 6-7 and idk the caravan's leader info